"I happened to have a pair of jeans, a jacket and a shirt to leave in, but I had no shoes except my Giuseppe Zanotti shoes that Giuseppe gave us to wear walking down the aisle. And I couldn't wear those home, in my 7-inch heels or whatever they were—they were beautiful but a little uncomfortable."

"And Jaden comes walking out of the hotel," Kris continued, smiling, "and I said, ‘Jaden! Where's your Batman boots?' And he goes, 'They're right here,' and I borrowed them. So Jaden...Batman saved the day."

And what was the deal with that Batman outfit, anyway? He was wearing it while posing for goofy pics in the photo booth with Kourtney Kardashian and other wedding guests, but that's not what he wore to the wedding...was it?

"He is the greatest kid in the world," she gushed about the teen. "I'm very close to Jaden and he's like one of my own, you know? And he had this Batman costume on and I thought it was just genius...When you look at it in person, it sounds just crazy, it was beautiful. He looked so good, and so fun, and he also has a really good sense of humor."

And he's probably lucky that Kylie and Kim, et al., have good senses of humor, too.

"Actually, the Batman costume was really cool and fabulous, and it was white and it was almost like, 'Oh, there's Jaden in his Batman costume,'" Jenner continued. "It wasn't like a crazy thing. It was actually really fun, and he added such a, you know, great humor to the night and it was great."

See the road leading up to Kimye's big day in Florence on new episodes of Keeping Up With the Kardashians, Sundays at 9 p.m. on E!